scholarly journals Experimental investigation of the effect of wind speed and wind direction on a solar chimney power plant

Author(s):  
O. C. Aja ◽  
H. H. Al-Kayiem ◽  
Z. A. Abdul Karim
2015 ◽  
Vol 804 ◽  
pp. 341-344
Author(s):  
Pongsak Jittabut

A solar chimney power plant is a simple solar thermal power plant that is capable of converting solar energy to thermal energy in the solar collectors. Then, the generated thermal energy is converted to kinetic energy in the chimney and ultimately to electric energy via a wind turbine and a generator. The purpose of this study is to evaluate the performance of the solar chimney power plant in Nakhon Ratchasima, Thailand in terms of estimateion for the electric energy output. A mathematical model based on the energy balance was developed to estimate the power output of solar chimneys as well as to examine the effect of various ambient conditions and structural dimensions on the power generation. It was found that, the wind speed inside chimney reaches more than 2 times of the value of free wind speed outside the chimney. The solar chimney power plant with 10 m chimney height and 4 m chimney diameter is capable of yearly producing between 1,779-3,647 W and the performance of solar chimney in the range of 9-18% respectively. The highest performance of solar chimney (18%) was appeared in April. It can save the use of conventional sources of energy like oil and natural gas.


Author(s):  
Sellami Ali ◽  
Benlahcene Djaouida ◽  
Abdelmoumène Hakim Benmachiche ◽  
Zeroual Aouachria

2012 ◽  
Vol 248 ◽  
pp. 391-394
Author(s):  
Wen Zhou Yan ◽  
Wan Li Zhao ◽  
Qiu Yan Li

By using the computational fluid dynamics code, FLUENT, Numerically simulation is investigated for Youngshou power plant. Under the constant ambient temperature, the effects of different wind speed and wind direction on the thermal flow field are qualitatively considered. It was found that when considering about the existing and normally operating power plants, the thermal flow field is more sensitive to wind direction and wind speed. Based on the above results, three improved measures such as: increasing the wind-wall height and accelerating the rotational speed of the fans near the edge of the ACC platform and lengthen or widen the platform are developed to effectively improving the thermal flow field, and enhanced the heat dispersal of ACC.


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